Home / 528,727.64-729,645.07-287,010.38

Finding the Fourth Proportional to 528,727.64, 729,645.07 and 287,010.38

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Solution

The fourth proportional to 528,727.64, 729,645.07 and 287,010.38 is: 396,074.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,727.64 : 729,645.07 = 287,010.38 : x
  2. Step 2: Convert to fraction form
    528,727.64/729,645.07 = 287,010.38/x
  3. Step 3: Cross multiply
    528,727.64x = 729,645.07 × 287,010.38
  4. Step 4: Simplify right side
    528,727.64x = 209,415,708,805.83
  5. Step 5: Solve for x
    x = 209,415,708,805.83/528,727.64
  6. Step 6: Final answer
    x = 396,074.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.